Hi all, I have an auto 81 DeLorean and when I drive it after about 1/2 an hour of driving I can no longer press the accelerator to the floor without the engine dying. It does not stop completely but it is as if I have let go of the accelerator, as I lift my foot back up it suddenly picks up again? The tank is full of fuel and is there is no debris in the tank as I cleaned it earlier this year. This was the first time I had driven the car for over 30-45 mins as I have only just started driving it since my 21st birthday. Any help would be appreciated, James RG England.